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Reika [66]
3 years ago
15

‼️ PLEASEE HELPPP ‼️

Mathematics
1 answer:
Naddik [55]3 years ago
4 0

Answer:

30

Step-by-step explanation:

3x - 27 = x +11

3x -27 +27 = 11 + 27

3x - x = x -x + 38

2x = 38

2x ÷ 2 = 38

X = 19

19 × 3 -27 = 30

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Which of the following statements are true? Select all that apply.
oksian1 [2.3K]

Answer:

\large\boxed{4a^o+4b^o=360^o}\\\boxed{2(a^o+b^o)=180^o}\\\boxed{a^o=90^o-b^o}

Step-by-step explanation:

4a^o+4b^o=360^o\qquad\text{divide both sides by 2}\\\\2a^o+2b^o=180^o\qquad\text{distributive}\\\\2(a^o+b^o)=180^o\qquad\text{divide both sides by 2}\\\\a^o+b^o=90^o\qquad\text{subtract}\ b^o\ \text{from both sides}\\\\a^o=90^o-b^o

3 0
4 years ago
Factor completely: <br> 4x²-49=
natima [27]

4x^2-49

Use the Difference of Two Squares Formula, x^2-y^2=(x+y)(x-y)

If x² = 4x², then x = √4x², x = 2x

If y² = 49, then y = √49, y = 7

We know both x and y, straight to formula.

x^2-y^2=(x+y)(x-y)\\4x^2-49=(2x+7)(2x-7)

Therefore, the factored form of 4x²-49 is (2x+7)(2x-7)

6 0
3 years ago
TIME REMAINING
Sonbull [250]
The correct answers is B
4 0
3 years ago
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A rectangular field 50 metres wide and x metres long required 260 metres of fencing​
KatRina [158]

Answer:

x=80

Step-by-step explanation:

im going to assume this is perimeter.

50+50=100

260-100=160

160÷2=80

3 0
3 years ago
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There is 45kg of mortar. The ratio of cement to sand in the mortar mix is 1 to 4. How many kg of cement is in the mortar
PtichkaEL [24]

Answer:

There are 11.25kg in the mortar

8 0
3 years ago
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